Knockdown oven.



No. 758,899. PATENTED MAY 3, 1904.

W. H. DAHMAN.

KNOGKDOWN OVEN.

APPLICATION FILED DBO. 28, 1903.

F0 MODEL.

.fri-Q. I.. M- E ll UNITED STATES Patented May 3, 1904.

PATENT OFFICE.

IVILLIAM H. DAHMAN, OF ST. LOUIS, MISSOURI, ASSIGNOR TO A. GIEISEL MANUFACTURING COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

KNOCKDOWN OVEN.

SPECIFICATION forming part of Letters Patent No. 7 58,899, dated May 8, 1904.

Application filed December 28, 1903. Serial No. 186,881. (No model.)

To all wir/om 'it mrty/ concern.'

Be it lznown that I, IVILLIAM H. DAHMAN, a citizen of the United States. residing' at St. Louis, State of Missouri, have invented certain new and useful Improvements in Knockdown Ovens` of which the following` is a full, clear, and exact description, reference being' had to the accompanying drawings, forming a part hereof.

My invention has relation to improvements in knockdown ovens; and it consists in the novel arrangement and construction of parts more fully set forth in the specification, and pointed out in the claims.

In the drawing's, Figure I is an elevation of the bottom and two end walls. Fig. 2 is an elevation showing' in addition the rear wall in the act of insertion. Fig'. 3 is a top plan view of the oven with cover removed. Fig'. 4 is a perspective of the oven assembled. Fig. .5 is a horizontal section on line 5 5 of Fig'. 4. Fig. 6 is a vertical section on line 6 6 of Fig. 9. F ig'. 7 is a vertical section on line 7 7 of Fig'. 4. Fig. 8 is a top plan or edge view of one of the end or side walls. Fig'. 9 is a vertical section on line 9 9 of Fig. IO. Fig'. l() is a horizontal section on line 10 I0 of Fig'. 9, and Fig. 11 is a perspective of one of the fastening-hooks.

The object of my invention is to construct a portable oven whose several parts may be readily assembled or taken apart, special consideration being had for the production of a reduced package for shipping' purposes.

A further object is to construct a knockdown oven which shall be simple, cheap, and light, and one possessing further and other advantages better apparent from a detailed description of the invention, which is as follows.

Referring' to the drawings, I represents the bottom of the oven; 2 2, the side or end walls; 3, the front wall; 4, the back wall, and 5 the top. Disposed parallel and adjacent to two opposite edges of the bottom are strips 6 6, whose outer or free edg'e is spaced a suitable distance from the surface to which said strips are directly secured, said free edge constituting', as it were, a hing'e-line, along' which the said walls 2 2 are coupled. To effect this coupling' or connection, the lower edge of each end wall is provided with an inwardlydeflected flange 7, which eng'ag'es the strip 6 from the under side, the flange 7 being' thus confined between the raised edge of the strip 6 and the inner surface of the bottom. To prevent the several walls Q 3 4 from being' forced outwardly by any pressure from within the oven, the wall I is provided with upwardly-turned marginal flanges 8 S, which lap over the lower edges of the several vertical walls referred to. The end walls Q serve to support between them a shelf 9, which is preferably secured to said walls through the medium of the terminal downwardly-defiected tongues l0, eng'ag'ing the loops I0 for their reception on the inner surfaces of said end walls. In addition to the basal flang'es 7 the end walls are provided with the inwardly-turned upper flanges 7 and the side vertical flanges 7 for purposes presently to appear. The opposite ends of the flanges 7 7' have a section of metal removed a suitable distance, the spaces s resulting from such removal allowing' for the free insertion therethrough of the front and rear walls 3 and 4, respectively, said front and rear walls being held against outward displacement by the vertical flanges 7'/ of the end walls. Like the walls 9. 2 the front and rear walls 3 4 are provided, respectively, with basal flanges Il, upper flang'es II, and side vertical flanges l2 12, the flanges 7 and 1I' collectively serving' to support the cover or top 5. The top or cover is provided with depending flanges 13, which overlap the upper ends of the several vertical walls.

Pivotally and detachably suspended from the upper ends of the walls 2 2 are a series of wire hooks 14, whose free ends can be swung' into engagement with the marginal bead I5, disposed along' the upper surface of the top or cover 5. The hooks snap over the bead and draw the cover firmly downward against the vertical walls of the oven. The several walls are provided with a lining' L, which is spaced a suitable distance from the walls, forming air-chambers A for the better retention of the heat, the edg'es of the lining' being brought against the corresponding edges of the walls, which are crimped over the lining, as best shown in Figs. 5 and 6.

In assembling' the parts the side or end walls 2 are first hinged to the base or bottom by passing the basal flanges 7 under the raised edges of the strips 6. Then the shelf 9 is attached in the manner previously indicated and as shown in Fig. l. The front and rear walls are then inserted through the several spaces 8, after which the top or cover isplaced over the four walls thus assembled and firmly locked by the hooks 14 in the manner indicated.

I do not of course wish to be limited to the precise details here shown, as they may in a measure be departed from without in any Wise affecting the nature or spirit of my invention. For example, the flanges 7 may have vsubstituted a series of inwardly-deflected lips,

and the strips 6 need Inot necessarily have a continuous engaging edge for such lips, but may have substituted therefor individual angle-pieces for engaging the several lips. So, too, the bead l5 need not be a continuous one;

`but the top may be beaded only at points opposite the hooks for purposes of engaging therewith. In the shipment of the oven when the latter is knocked down the hooks 14 may be detached and packed by themselves, when they may be subsequently attached in reassembling the parts.

To such features of the oven as are oldl no special reference is herein made, it being understood that they do not form subject-matter for claims in the present application.

Having described my invention, what I claim isl. In a knockdown oven, a suitable base or bottom wall, strips disposed along two opposite sides of the bottom having their outer edges spaced a suitable distance from said bottom, end or side walls having basal fianges adapted to be inserted between the bottom and the aforesaid strips, inwardly-deflected vertical flanges and upper horizontal flanges formed on said end walls, the opposite ends lof the upper horizontal iianges being out away for a suitable distance, front and rear walls inserted into the cut-away spaces, a top or cover, and means for locking the cover to the several vertical walls, substantially as set forth.

2. In a knockdown oven, a suitable base or bottom wall, strips disposed along two opposite sides of the bottom having their outer edges spaced a suitable distance from said bottom,

end or side walls having basal flanges adapted to be inserted between the bottom and the aforesaid strips, inwardly-deflected vertical flanges and upper horizontal flanges formed on said end walls, the opposite ends of the upper horizontal fianges being cut away for a suitable distance, front and rear walls inserted into the said cut-away spaces, a top or cover, and swinging hooks carried by the end walls for engaging over the cover and drawing the same downward, substantially as set forth.

3. In a knockdown oven, a suitable base or bottom wall strips disposed along two opposite sides of the bottom having their outer edges raised above the bottom, end walls having basal horizontal flanges adapted to be inserted between said strips and bottom, inwardly-deflected vertical and upper horizontal flanges formed on said end walls, the opposite ends of said horizontal flanges being cut away for a suitable distance, front and rear vertical walls inserted through said cut-away portions, marginal upwardly-deflected anges formed in the bottom lapping over the bases ofthe several vertical walls, 'a cover having depending flanges lapping over the upper. edges of the several vertical walls, a bead formed on the cover adjacent to the edge thereof, and swinging locking-hooks carried by the ovenwalls for engaging said bead, substantially as set forth.

4. In a knockdown oven, a suitable base or bottom wall,strips disposed along two opposite sides of the bottom having their outer edges spaced a suitable distance from said bottom, end or side walls having basal flanges adapted to be inserted between the bottom and the aforesaid strips, inwardly-deflected vertical flanges and upper horizontal flanges formed on said end walls, the opposite ends off-the upper horizontal flanges being cut away for a suitable distance, front and rear walls inserted into the cut-away spaces, a top or cover, and swinging hooks carried by'two opposite vertical walls for engaging over the cover and drawing the same downward, substantially as set forth.

In testimony whereof I afIiX my signature in presence of two witnesses.

INILLIAM H. DAHMAN.

Vitnesses:

EMIL STAREK, MARY D. -WHrrooi/LB.

IOO 

